# Cotangens - examples

- How far

From the top of a lighthouse 145 ft above sea level, the angle of depression of a boat 29°. How far is the boat from the lighthouse? - Building

How high is the building that throws horizontal shadow 58.5 m long at angle 36°36'? - Regular 5-gon

Calculate area of the regular pentagon with side 11 cm. - Aircraft

The plane flies at altitude 6800 m. At the time of first measurement was to see the elevation angle of 20° and second measurement of the elevation angle of 34°. Calculate the distance the plane flew between the two measurements. - Q-Exam

If tg α = 3.8, Calculating sin α, cos α, cotg α . - Angle

A straight line p given by the equation ?. Calculate the size of angle in degrees between line p and y-axis.

We apologize, but in this category are not a lot of examples.

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